Characterization of new FIR laser lines from CD3-rockingand asymmetric CD3 deformation modes of 13CD3OD |
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Authors: | Viscovini RC Telles EM Scalabrin A Pereira D |
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Affiliation: | Inst. de Fisica, UNICAMP, Campinas; |
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Abstract: | In this paper, we report new optically pumped far-infrared (FIR) laser lines from the in-plane CD3-rocking and asymmetric CD 3 deformation absorption vibrational bands of 13CD 3OD. A waveguide CO2 laser of wide tunability (290 MHz) was used as the pump source, and a Fabry-Perot open cavity as the FIR laser resonator. Optoacoustic absorption spectrum was used as a guide to search for new FIR laser lines. We could observe 13 new laser lines in the range 103-491 μm. The lines were characterized according to wavelength, relative polarization, relative intensity, and optimum working pressure. The transferred lamb-dip technique was used to measure the frequency absorption transition for both new and previously reported laser lines |
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